I managed a 1.5 with the limiter @ 6200 with 18psi in the tires.

and your 60 ft comes before you shift to 2nd.

 

What wheel/tire was this on/?

 

when i used to drag i hit low 1.6 and once a 1.5 very consistant times. i could do it with 2step or manually there are a few ways to do it it is all in ur footwork. everycar is different so depending on ur clutch here is my set up and how i did it.
i have the ACT Extreme HD pressure plate ya its a beast with a organic disk on stock flywheel stock flywheel is better for launching due to more inertia. i had my 2step set at 6kish building 12psi my tire pressure would be about 19psi all around about to break the bead almost this is with ****ty tires. pull your ebrake up when the tree lights start to let the clutch till you feel the brake hold it then right when green goes quickly slip/dump it and the ebrake at once the car will lunge HARD since the drive train is already charged and held with the ebrake like a tranny brake. i shift at 8.5k outta first since its so short. the longer you stay in it the better. without 2 step i would do the same just feather it at about 6.5-7k let the clutch out a bit to charge the drivetrain while holding the ebrake then bam its all timing and clutch control. takes a lot of practice. be ready to brake stuff too drag racing is terrible for the car haha.

 

More revs needed with a bigger turbk